Propeller Shaft And Universal Joints - Chevrolet 10 1971 Series Chassis Service Manual

REAR SUSPENSION AND DRIVE LINE 4-22

PROPELLER SHAFT AND UNIVERSAL JOINTS

Service In fo rm a tio n ...................................................................................
Component Parts Replacement ............................................................
Propeller Shaft .....................................................................................
Removal ............................................................................................
Repairs (Universal Joints) ...........................................................
Center Support B e aring s ................................................................
Both one piece and two piece propeller shafts are used
depending on the model. All are tubular and use needle
bearing type universal joints.
On models that use a two piece shaft, the shaft is sup­
ported near its splined end in a rubber cushioned ball
PROPELLER SHAFT
Two methods are used to retain the propeller shaft
to the differential pinion flange. One method utilizes
" U" bolts (fig. 45) and the other is a strap attachment
(fig. 46).
Removal
1. Raise vehicle on hoist. Mark relationship of shaft
to companion flange and disconnect the rear uni­
versal joint by removing trunnion bearing
bolts or straps. Tape bearing cups to trunnion to
prevent dropping and loss of bearing rollers.
2. For models with two-piece shafts remove bolts re­
taining bearing support to frame crossmember.
3. Slide propeller shaft forward disengaging trunnion
from axle flange, then slide assembly rearward
disengaging from transmission.
Repairs (Universal Joints)
The universal
NOTE:
extended-life design and do not require periodic
inspection or lubrication; however, when these
Fig. 45— " U " Bolt Attachment
INDEX
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SERVICE INFORMATION
COMPONENT PART REPLACEMENT
"V"
joints are of the
Installation .......................................................................................
Constant Velocity Joint .....................................................................
Disassembly.......................................................................................
Assembly...........................................................................................
Specifications .....................................................(See Specifications Section)
bearing which is mounted in a bracket attached to a
frame crossmember. The ball bearing is permanently
lubricated and sealed.
Four wheel drive models use a front propeller shaft
incorporating a constant velocity joint (fig. 53).
joints are disassembled, repack bearings and
lubricate reservoir at end of trunnions with
high-melting point wheel bearing lubricant and
replace the dust seals.
1. Remove bearing lock rings from trunnion yoke.
2. Support trunnion yoke on a piece of 1-1/4" I0 D.
pipe on an arbor bed.
Due to length of the propeller shaft
NOTE:
it may be more convenient to use a bench vise,
for removal and installation, instead of an arbor
press. In this case, proceed with disassembly
and assembly procedure as with an arbor press.
3. Using a suitable socket or rod, press on trunnion
until bearing cup is almost out (fig. 47). Grasp cup
in vise and work cup out of yoke.
The bearing cup cannot be fully pressed
NOTE:
out.
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10-30 CHEVROLET TRUCK SERVICE MANUAL